I have heard about chickens laying two eggs a day. For the last couple of days I have gotten less than my normal amount of eggs. One moring there was goo in one of the nests so I suspect one had layed a shell-less egg. This morning when I checked my birds I checked the nest boxes there were no eggs. When I went out this (late) afternoon every one of my girls had laid an egg and there was one extra which means that one of my girls laid two eggs today.